US20070266664A1 - Method for repairing the surface of a board-shaped carrier - Google Patents

Method for repairing the surface of a board-shaped carrier Download PDF

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Publication number
US20070266664A1
US20070266664A1 US11/749,455 US74945507A US2007266664A1 US 20070266664 A1 US20070266664 A1 US 20070266664A1 US 74945507 A US74945507 A US 74945507A US 2007266664 A1 US2007266664 A1 US 2007266664A1
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US
United States
Prior art keywords
carrier
coating
formwork
board
welding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/749,455
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English (en)
Inventor
Jurgen Schlenker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUNNEBECK GROUP GmbH
Original Assignee
HUNNEBECK GROUP GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by HUNNEBECK GROUP GmbH filed Critical HUNNEBECK GROUP GmbH
Publication of US20070266664A1 publication Critical patent/US20070266664A1/en
Assigned to HUNNEBECK GROUP GMBH reassignment HUNNEBECK GROUP GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHLENKER, JURGEN, DR.
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/04—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using preformed elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/24—Apparatus or accessories not otherwise provided for
    • B29C73/26—Apparatus or accessories not otherwise provided for for mechanical pretreatment
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/05—Forming boards or similar elements the form surface being of plastics
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/06—Forming boards or similar elements the form surface being of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/002—Panels; Plates; Sheets

Definitions

  • the invention relates to a method for repairing the surface of a board-shaped carrier having a coating on at least one side that can be melted under the influence of heat.
  • the invention relates to a method for repairing formwork elements, as well as to the board-shaped carrier or the formwork element itself.
  • Formwork elements serve the purpose of erecting concrete buildings and keep the unhardened concrete in shape until it has hardened.
  • Formwork elements as a rule, consist of a frame and a board-shaped formwork panel, hereinafter referred to as board-shaped carrier. Numerous methods for repairing such formwork elements or formwork panels are known from the state of the art:
  • Known formwork elements such as formwork panels can be repaired, for example by filling small blemishes or even by using repair disks in the case of damage over a greater area.
  • the surface of the plywood board is thus structured, which is not desirable when erecting or producing concrete surfaces.
  • the invention is based on the object of providing an improved method for repairing formwork boards or formwork elements.
  • a formwork board has a coating that is meltable under the influence of heat, which, after damage has occurred, is at first removed in part, the removed part being replaced by a new cover foil that is connected to the remaining coating by welding. Therefore, when repairing the formwork boards, individual defects of the coating or the formwork facing need not be elaborately touched up. Rather, industrially produced foils with a good surface quality can be applied over a large area. Compared to other joining techniques, such as, for example, gluing, the following advantages are the result: repairing the formwork surface again is more difficult in the case of adhesives, since this is a material composite.
  • a base provided with glue is more difficult to prepare, so that the remaining coating would have to be removed slightly more deeply with each new repair. Ripping, smearing and uncontrolled removal movements would occur when the top side of the coating is removed, e.g. by milling.
  • the waste consists of several components, which makes recycling or disposal more difficult. Applying glue over a surface area is more difficult and in the majority of cases involves the release of solvents.
  • glues require hardening times that delay the production process. Welding on a new cover foil can be done almost any number of times, in particular when the cover foils and the remaining coating consist of the same material. This extends the life span of the formwork board.
  • the formwork boards or elements thus designed satisfy the operational requirements of price, simple repair that can, if necessary, be fully or partly automated, robustness and surface quality particularly well.
  • the surface of a formwork element can cheaply and simply be designed so as to be reusable, with no blemishes, repairs or weaknesses showing on the surface of the formwork facing facing the concrete of a formed building.
  • the damaged formwork facing or foil of the formwork panel of a multi-layered formwork element or panel provided as a surface can be substituted or refaced in a simple manner.
  • formwork elements of a modular frame formwork can be prepared for reuse in this manner.
  • it is specifically removed in part without making the carrier system itself unusable and damage it.
  • a new cover foil or formwork foil is applied to the reusable formwork panel and attached to it. Damages of the formwork panel or the carrier system do not become apparent on the surface of the formwork element owing to the applied new full-area surface.
  • a multi-layered formwork element can be made suitable for reuse with an appropriate production effort, avoiding time-consuming repair and touch-up work of the formwork facing, without irritating surface structures becoming apparent on the surface of the formwork element.
  • scratched or otherwise damaged surfaces of formwork elements are replaced by new formwork facings or formwork foils.
  • the formed formwork element or the carrier is coated with a new formwork foil on the side facing the concrete, according to the invention. Therefore, the formwork element according to the invention consists of at least two main functional elements, namely a carrier system or the formwork panel and a coating, i.e. formwork foil or formwork facing, whose surface can be removed and welded on again.
  • the formwork foil forms the actual contact surface with the concrete, and is responsible for the structuring of the surface as well as the surface quality of the concrete.
  • the carrier system or the formwork panel itself is formed such that it provides the required load-bearing capacity. In this case, multi-layered systems may also be used in order to reinforce the formwork panel or the carrier system.
  • Milling is a method that can be controlled well for the large area removal of thin layers, and it is more suitable than smoothing due to the large removal.
  • Blade milling machines are preferred because they are better adapted to the soft ductile material of the coating. If a plurality of blades are used in the blade milling machine, undesired rattling can be avoided. Because the blades may be distributed over the blade milling machine so that they are not all used at the same time or under the same angle. The blades distributed in axial direction therefore bite into the surface of the coating at slightly different times. Usually, a small overlap of the area that adjacent blades bite into is provided so that the formation of ridges running in the feeding direction is excluded. Depending on the parameters of feeding speed (i.e.
  • the result is a perfectly plane or slightly wavy surface of the remaining coating.
  • a slight waviness can even be desired in order to make it easier to melt on the remaining coating during welding.
  • inhomogeneities can be compensated during melting-on, when the cover foil is pressed on the remaining coating.
  • the milling machine In order to avoid sudden strains, when the milling tool bites into the surface of the carrier, and processing inaccuracies connected therewith, the milling machine is disposed obliquely in relation to the feed. That means that the milling machine does not bite into the entire edge length of a board coming into the area of the milling machine at the same time, but starts, for example, at the front left edge of the board and seizes the entire width of the board only during the continued feed. This reduces mechanical strains and improves the surface quality.
  • the method preferably is carried out continuously, so that melting-on does not become necessary over a large area, which entails large investments.
  • welding is carried out over the length of the carrier, with the melting-on and welding being done immediately one after the other in a strictly limited area.
  • cover foil When the cover foil is melted on, it is entirely sufficient to only bring the underside into the liquid state so that less energy is consumed and less time is required. The thickness of the cover foil as well as its surface is substantially maintained.
  • Heat lamps in particular infrared heat lamps, short-wave twin tube lamps and the like are used during welding. This is an uncomplicated, inexpensive technology whose heating power can be adjusted and adapted in a reproducible and continuous manner over a wide range, if necessary automatically dependent on the process.
  • both foils can be heated at the same time with one heat lamp. It can be expedient for optimizing the melting-on process that the heat lamp is pivotable, so that the introduction of heat can be shifted for the benefit of the cover foil or the remaining coating.
  • the roller for diverting the cover foil can press the cover foil against the remaining coating at the same time, and thus initiate or support the actual welding process.
  • the heat distribution is designed such that the material is already sufficiently cooled or hardened when it leaves the roller. Alternatively, this may also be done by additional subsequent pinch rollers.
  • the formwork elements in which the above formwork boards or board-shaped carriers are inserted in a frame that gives stability, it may be necessary to take the carriers out of the frame. Even if it is not technically imperative to take them out, it nevertheless has advantages with regard to the transport of the carriers to the repair system.
  • the carriers which substantially consist of only one board, can be stacked in a manner that saves substantially more room. In a continuous coating method, the carriers that are disposed behind one another can be repaired very effectively. If the size and the geometry of the formwork element permits, it is preferred to repair the formwork element according to the invention without the time-consuming removal of the carrier.
  • the life-span of the carrier is extended.
  • the method can also be carried out on both sides of the carrier, if the carrier board is developed appropriately, for example, symmetrically. This doubles the practical life-span of the board. In case of possible irreparable damages to one side, at least the second side can be used further.
  • the carrier described according to the invention is basically known in formwork construction, for example under the brand name LAMINAEX Al PP by the company Isosport, A-7000 Eisenstadt. These are boards with a core of extruded PP foam. Reinforcement boards of aluminum are provided on both sides for reinforcement, i.e. for increasing the bending resistance. A foil of PP as a formwork-facing forming coating is applied to them by means of a special continuous process. It is easily detachable from the hardened concrete. The connection between the aluminum board and the PP material, which is demanding to produce, can thus be carried out safely and industrially. The connection between the materials remains over the entire life-span, because it is not removed when the carrier is reprocessed. Thus, only tools of a simple construction are necessary for recoating.
  • the formwork elements or carriers according to the invention may, for example, have a three-layered of five-layered structure, depending on the extent of mechanical stress, however, a two-, four or multi-layered structure is also possible.
  • Plastics with or without reinforcements or wood materials such as plywood or chipboards are used as the material for the carrier system or the formwork panel.
  • Metallic material in particular steel, aluminum and other materials are also conceivable.
  • a sufficient rigidity must be provided for the formwork elements, in particular in wall formwork and wall supports.
  • the carrier system may be reinforced by a metal foil or also by fibers.
  • the formwork foil can be a foil or board of plastics, preferably of polyproylene (PP), polyethelene (PE) and/or polyvinyl chloride (PVC). Constructionally, the formwork element according to the invention is formed as a composite structure.
  • the individual functional layers are connected with each other in a sandwich construction.
  • the individual functional layers are connected with each other by means of adhesives.
  • the ratio of the remaining coating to the thickness of the coating is selected such that the new cover foil is not unnecessarily thick, and that on the other hand a good surface quality is ensured even in the case of greater damage.
  • the re-coating of the entire modular frame formwork element leads to a substantial reduction of cleaning and repair costs, because, additionally, the dismantling and assembly of the formwork facing can be dispensed with.
  • the cleaned modular frame formwork elements are customized as regards their width and height and are subsequently fed into the recoating system again. It is also possible to incorporate the cleaning process into the recoating system.
  • the surface is removed from the carrier system in the subsequent removal process. If the carrier system remains connected with the frame during the entire removal and recoating process, fastening elements such as rivets or bolts between carrier system and frame are designed so as not to have a negative effect upon the recoating process.
  • Large boards can be reprocessed automatically, cost-effectively and with a defined surface.
  • Large boards preferably have a length of more than 2 m, preferably 2.40 m.
  • the width is at least 30 cm, preferably 75-90 cm.
  • the top side of the coating or of the cover foil is smooth, i.e., it has such a surface that the result is the usually desired smooth exposed concrete surface.
  • FIG. 1 a formwork board known from the prior art
  • FIG. 2 the formwork board of FIG. 1 after the top side has been milled off;
  • FIG. 3 welding a new cover foil onto the remaining coating
  • FIG. 4 the repaired carrier from FIG. 1 .
  • the formwork carrier 1 of FIG. 1 is provided with a foam core 2 made from PP, which is provided on both sides with a reinforcement layer of aluminum sheet 3 , 3 ′.
  • the surface 5 of the symmetrically configured formwork carrier is formed by a layer of PP foil 4 , 4 ′ that is connected with the aluminum boards. The surface 5 has damages 48 that even reach into the core 2 .
  • FIG. 2 shows the formwork board after the top side has been milled off by means of a blade milling machine. Only a remaining coating 41 has remained of the foil 4 . The remaining coating has a wavy surface, which stems from the processing with the blade milling machine.
  • FIG. 3 schematically shows the welding of a new cover foil 42 onto the remaining coating 41 .
  • the new cover foil 42 is fed to the formwork board, redirected around the roller 10 , and pressed against the remaining coating 41 by the roller 10 .
  • the top side of the remaining coating 41 which still is to be welded, and the cover foil guided around the roller 10 , on its underside, face the heat lamp 20 .
  • the heat lamp acts on the common joining zone and can therefore heat and melt both layers 41 , 42 simultaneously.
  • the diverting and pinch roller 10 at the same time provides for the exposition of the underside of the cover foil and the pressing of the respective melted-on layers (shaded area).
  • a welding zone 43 is the result.
  • FIG. 4 shows the completely reprocessed formwork board with the new cover foil 42 which is provided with a smooth surface 5 .
  • the damage 48 now does not have any effects anymore on the surface quality. Edges of the cover foil that possibly protrude over the remaining coating can be removed if necessary.
  • the coating 4 practically consists of a single continuous coating of PP, but with a welding zone 43 still being detectable. Insofar, the repaired coating is not entirely homogeneous compared with a coating that has not been touched up according to the invention.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Laminated Bodies (AREA)
  • Panels For Use In Building Construction (AREA)
US11/749,455 2006-05-16 2007-05-16 Method for repairing the surface of a board-shaped carrier Abandoned US20070266664A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006023109.0 2006-05-16
DE102006023109A DE102006023109A1 (de) 2006-05-16 2006-05-16 Verfahren zum Reparieren der Oberfläche eines plattenförmigen Trägers

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US20070266664A1 true US20070266664A1 (en) 2007-11-22

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US11/749,455 Abandoned US20070266664A1 (en) 2006-05-16 2007-05-16 Method for repairing the surface of a board-shaped carrier

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US (1) US20070266664A1 (de)
EP (1) EP1857611B8 (de)
AT (1) ATE525541T1 (de)
DE (1) DE102006023109A1 (de)
DK (1) DK1857611T3 (de)
PL (1) PL1857611T3 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008130329A1 (en) * 2007-04-18 2008-10-30 Wei Fern Choo Composite board
CN112482755A (zh) * 2020-11-09 2021-03-12 广州毅昌牛模王科技有限公司 一种塑料模板修补工艺
CN114131883A (zh) * 2021-11-24 2022-03-04 华创天元实业发展有限责任公司 一种多层网涂塑机构

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH699457A1 (de) * 2008-09-08 2010-03-15 Quadrant Plastic Composites Ag Verfahren zum Behandeln der Oberfläche von Faserverbundplatten.
DE102009028741A1 (de) 2009-08-20 2011-02-24 Otto Wulff Bauunternehmung Gmbh & Co. Kg Verfahren und Vorrichtung zur Herstellung von Decken mit Hartschaumplatten
EP2666618B1 (de) * 2012-05-24 2016-01-13 alkus GmbH & Co. KG Reparaturverfahren für eine Betonschalplatte

Citations (1)

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Publication number Priority date Publication date Assignee Title
US3798406A (en) * 1970-03-10 1974-03-19 O Becker Process for welding metal coated sheet structures

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DE6600943U (de) * 1964-03-18 1969-02-27 Elbatainer Kunststoff Kunststoff-schalplatte.
DE2500036C3 (de) * 1975-01-02 1978-04-06 Helmut 2083 Halstenbek Meyer Verfahren und Vorrichtung zum Ausbessern schadhafter Platten
AT386565B (de) 1986-10-03 1988-09-12 Isovolta Reparier-laminat und seine verwendung
DE10114161A1 (de) * 2001-03-22 2002-09-26 Thyssen Huennebeck Gmbh Schalungselement und Verfahren zum Herstellen und Reparieren desselben
DE10128549A1 (de) * 2001-06-13 2002-12-19 Meinhard Meier Als Platte, Strang oder Formkörper gestaltetes Bauteil aus bindemittelgebundenen Natur-Fasern oder -spänen als Halbzeug oder Fertigprodukt sowie Verfahren zum Herstellen und Verfahren zum Oberflächenvergüten oder Oberflächenreparieren solcher Formkörper
EP1394338A1 (de) * 2002-08-19 2004-03-03 Dirk Hoffmann Verfahren zum Vergüten durch Beschichten der Oberflächen von Trägertafeln, insbesondere von Holztafeln, und eine beschichtete Trägertafel, insbesondere Holztafel
DE10345810A1 (de) * 2003-09-30 2005-04-14 Reck-Heinrich, Robert Verfahren zum Reparieren von Kunststoffgegenständen
DE102004050564A1 (de) * 2004-10-15 2006-04-27 Hünnebeck GmbH Beschichtete Schaltafel
DE102006006408A1 (de) * 2006-02-13 2007-08-16 Alkus Gmbh & Co. Kg Verfahren zur Reparatur der Oberfläche einer Schalplatte

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3798406A (en) * 1970-03-10 1974-03-19 O Becker Process for welding metal coated sheet structures

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008130329A1 (en) * 2007-04-18 2008-10-30 Wei Fern Choo Composite board
CN112482755A (zh) * 2020-11-09 2021-03-12 广州毅昌牛模王科技有限公司 一种塑料模板修补工艺
CN114131883A (zh) * 2021-11-24 2022-03-04 华创天元实业发展有限责任公司 一种多层网涂塑机构

Also Published As

Publication number Publication date
DE102006023109A1 (de) 2007-11-22
EP1857611B1 (de) 2011-09-21
EP1857611A3 (de) 2008-06-04
ATE525541T1 (de) 2011-10-15
EP1857611A2 (de) 2007-11-21
EP1857611B8 (de) 2012-02-29
PL1857611T3 (pl) 2012-06-29
DK1857611T3 (da) 2011-11-21

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Owner name: HUNNEBECK GROUP GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SCHLENKER, JURGEN, DR.;REEL/FRAME:020436/0182

Effective date: 20070727

STCB Information on status: application discontinuation

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